For unknown reasons, when you open a pdf file which comes from sharing groups or from a web Cloud, you have found the texts show fuzzily. No matter how you adjust the display Zoom in or out, it’s still very blurry and severely impacts you do some reading and editing.
Here’s a look at the problem and how to fix it.
1. Make sure your font smoothing options in Adobe Reader is checked. Start from Edit > Preferences > Page Display.
2. Here you would see Smooth Text in Rendering section, select For Monitor from the down-drop list, then ensure all of the options are selected.
To improve the resolution ratio, increase the pixels/inch from the Resolution section:
Go from Edit > Preferences > Page Display > Resolution > Custom resolution. Then click on the upward triangle to increase resolution pixels.
Tips: If those methods take nothing effect, you should consider to update your PDF reader, make it compatible with your computers’ operating systems.